PLASTIC PACKAGING MATERIAL, AND FOOD PACKAGING BAG MANUFACTURED BY USING THE PLASTIC PACKAGING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a plastic packaging material ready for the heat-cooking by a microwave oven which is free from any troublesome work in beat-cooking by the microwave oven, and capable of efficiently manufacturing bags at a reasonable cost, and a food packaging bag comprising a pillow-type three-side seal packaging bag formed of the plastic packaging material.;SOLUTION: In the plastic packaging material 10 in a rolled condition for manufacturing the food packaging bag which automatically packages the food by an automatic packaging machine and stores the food, a perforation-like slit 11 is continuously made in the vicinity of one edge of the roll so that the steam is released along the slit 11 provided in a back seal part 13 of the food packaging bag 12 by the internal pressure generated in the food packaging bag containing the food when heated in the microwave oven.;COPYRIGHT: (C)2002,JPO